contrib/file/src/print.c

   1 /*
   2  * Copyright (c) Ian F. Darwin 1986-1995.
   3  * Software written by Ian F. Darwin and others;
   4  * maintained 1995-present by Christos Zoulas and others.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice immediately at the beginning of the file, without modification,
  11  *    this list of conditions, and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28 /*
  29  * print.c - debugging printout routines
  30  */
  31
  32 #include "file.h"
  33
  34 #ifndef lint
  35 FILE_RCSID("@(#)$File: print.c,v 1.82 2017/02/10 18:14:01 christos Exp $")
  36 #endif  /* lint */
  37
  38 #include <string.h>
  39 #include <stdarg.h>
  40 #include <stdlib.h>
  41 #ifdef HAVE_UNISTD_H
  42 #include <unistd.h>
  43 #endif
  44 #include <time.h>
  45
  46 #define SZOF(a) (sizeof(a) / sizeof(a[0]))
  47
  48 #include "cdf.h"
  49
  50 #ifndef COMPILE_ONLY
  51 protected void
  52 file_mdump(struct magic *m)
  53 {
  54         static const char optyp[] = { FILE_OPS };
  55         char tbuf[26];
  56
  57         (void) fprintf(stderr, "%u: %.*s %u", m->lineno,
  58             (m->cont_level & 7) + 1, ">>>>>>>>", m->offset);
  59
  60         if (m->flag & INDIR) {
  61                 (void) fprintf(stderr, "(%s,",
  62                     /* Note: type is unsigned */
  63                     (m->in_type < file_nnames) ? file_names[m->in_type] :
  64                     "*bad in_type*");
  65                 if (m->in_op & FILE_OPINVERSE)
  66                         (void) fputc('~', stderr);
  67                 (void) fprintf(stderr, "%c%u),",
  68                     ((size_t)(m->in_op & FILE_OPS_MASK) <
  69                     SZOF(optyp)) ? optyp[m->in_op & FILE_OPS_MASK] : '?',
  70                     m->in_offset);
  71         }
  72         (void) fprintf(stderr, " %s%s", (m->flag & UNSIGNED) ? "u" : "",
  73             /* Note: type is unsigned */
  74             (m->type < file_nnames) ? file_names[m->type] : "*bad type");
  75         if (m->mask_op & FILE_OPINVERSE)
  76                 (void) fputc('~', stderr);
  77
  78         if (IS_STRING(m->type)) {
  79                 if (m->str_flags) {
  80                         (void) fputc('/', stderr);
  81                         if (m->str_flags & STRING_COMPACT_WHITESPACE)
  82                                 (void) fputc(CHAR_COMPACT_WHITESPACE, stderr);
  83                         if (m->str_flags & STRING_COMPACT_OPTIONAL_WHITESPACE)
  84                                 (void) fputc(CHAR_COMPACT_OPTIONAL_WHITESPACE,
  85                                     stderr);
  86                         if (m->str_flags & STRING_IGNORE_LOWERCASE)
  87                                 (void) fputc(CHAR_IGNORE_LOWERCASE, stderr);
  88                         if (m->str_flags & STRING_IGNORE_UPPERCASE)
  89                                 (void) fputc(CHAR_IGNORE_UPPERCASE, stderr);
  90                         if (m->str_flags & REGEX_OFFSET_START)
  91                                 (void) fputc(CHAR_REGEX_OFFSET_START, stderr);
  92                         if (m->str_flags & STRING_TEXTTEST)
  93                                 (void) fputc(CHAR_TEXTTEST, stderr);
  94                         if (m->str_flags & STRING_BINTEST)
  95                                 (void) fputc(CHAR_BINTEST, stderr);
  96                         if (m->str_flags & PSTRING_1_BE)
  97                                 (void) fputc(CHAR_PSTRING_1_BE, stderr);
  98                         if (m->str_flags & PSTRING_2_BE)
  99                                 (void) fputc(CHAR_PSTRING_2_BE, stderr);
 100                         if (m->str_flags & PSTRING_2_LE)
 101                                 (void) fputc(CHAR_PSTRING_2_LE, stderr);
 102                         if (m->str_flags & PSTRING_4_BE)
 103                                 (void) fputc(CHAR_PSTRING_4_BE, stderr);
 104                         if (m->str_flags & PSTRING_4_LE)
 105                                 (void) fputc(CHAR_PSTRING_4_LE, stderr);
 106                         if (m->str_flags & PSTRING_LENGTH_INCLUDES_ITSELF)
 107                                 (void) fputc(
 108                                     CHAR_PSTRING_LENGTH_INCLUDES_ITSELF,
 109                                     stderr);
 110                 }
 111                 if (m->str_range)
 112                         (void) fprintf(stderr, "/%u", m->str_range);
 113         }
 114         else {
 115                 if ((size_t)(m->mask_op & FILE_OPS_MASK) < SZOF(optyp))
 116                         (void) fputc(optyp[m->mask_op & FILE_OPS_MASK], stderr);
 117                 else
 118                         (void) fputc('?', stderr);
 119
 120                 if (m->num_mask) {
 121                         (void) fprintf(stderr, "%.8llx",
 122                             (unsigned long long)m->num_mask);
 123                 }
 124         }
 125         (void) fprintf(stderr, ",%c", m->reln);
 126
 127         if (m->reln != 'x') {
 128                 switch (m->type) {
 129                 case FILE_BYTE:
 130                 case FILE_SHORT:
 131                 case FILE_LONG:
 132                 case FILE_LESHORT:
 133                 case FILE_LELONG:
 134                 case FILE_MELONG:
 135                 case FILE_BESHORT:
 136                 case FILE_BELONG:
 137                 case FILE_INDIRECT:
 138                         (void) fprintf(stderr, "%d", m->value.l);
 139                         break;
 140                 case FILE_BEQUAD:
 141                 case FILE_LEQUAD:
 142                 case FILE_QUAD:
 143                         (void) fprintf(stderr, "%" INT64_T_FORMAT "d",
 144                             (unsigned long long)m->value.q);
 145                         break;
 146                 case FILE_PSTRING:
 147                 case FILE_STRING:
 148                 case FILE_REGEX:
 149                 case FILE_BESTRING16:
 150                 case FILE_LESTRING16:
 151                 case FILE_SEARCH:
 152                         file_showstr(stderr, m->value.s, (size_t)m->vallen);
 153                         break;
 154                 case FILE_DATE:
 155                 case FILE_LEDATE:
 156                 case FILE_BEDATE:
 157                 case FILE_MEDATE:
 158                         (void)fprintf(stderr, "%s,",
 159                             file_fmttime(m->value.l, 0, tbuf));
 160                         break;
 161                 case FILE_LDATE:
 162                 case FILE_LELDATE:
 163                 case FILE_BELDATE:
 164                 case FILE_MELDATE:
 165                         (void)fprintf(stderr, "%s,",
 166                             file_fmttime(m->value.l, FILE_T_LOCAL, tbuf));
 167                         break;
 168                 case FILE_QDATE:
 169                 case FILE_LEQDATE:
 170                 case FILE_BEQDATE:
 171                         (void)fprintf(stderr, "%s,",
 172                             file_fmttime(m->value.q, 0, tbuf));
 173                         break;
 174                 case FILE_QLDATE:
 175                 case FILE_LEQLDATE:
 176                 case FILE_BEQLDATE:
 177                         (void)fprintf(stderr, "%s,",
 178                             file_fmttime(m->value.q, FILE_T_LOCAL, tbuf));
 179                         break;
 180                 case FILE_QWDATE:
 181                 case FILE_LEQWDATE:
 182                 case FILE_BEQWDATE:
 183                         (void)fprintf(stderr, "%s,",
 184                             file_fmttime(m->value.q, FILE_T_WINDOWS, tbuf));
 185                         break;
 186                 case FILE_FLOAT:
 187                 case FILE_BEFLOAT:
 188                 case FILE_LEFLOAT:
 189                         (void) fprintf(stderr, "%G", m->value.f);
 190                         break;
 191                 case FILE_DOUBLE:
 192                 case FILE_BEDOUBLE:
 193                 case FILE_LEDOUBLE:
 194                         (void) fprintf(stderr, "%G", m->value.d);
 195                         break;
 196                 case FILE_DEFAULT:
 197                         /* XXX - do anything here? */
 198                         break;
 199                 case FILE_USE:
 200                 case FILE_NAME:
 201                 case FILE_DER:
 202                         (void) fprintf(stderr, "'%s'", m->value.s);
 203                         break;
 204                 default:
 205                         (void) fprintf(stderr, "*bad type %d*", m->type);
 206                         break;
 207                 }
 208         }
 209         (void) fprintf(stderr, ",\"%s\"]\n", m->desc);
 210 }
 211 #endif
 212
 213 /*VARARGS*/
 214 protected void
 215 file_magwarn(struct magic_set *ms, const char *f, ...)
 216 {
 217         va_list va;
 218
 219         /* cuz we use stdout for most, stderr here */
 220         (void) fflush(stdout);
 221
 222         if (ms->file)
 223                 (void) fprintf(stderr, "%s, %lu: ", ms->file,
 224                     (unsigned long)ms->line);
 225         (void) fprintf(stderr, "Warning: ");
 226         va_start(va, f);
 227         (void) vfprintf(stderr, f, va);
 228         va_end(va);
 229         (void) fputc('\n', stderr);
 230 }
 231
 232 protected const char *
 233 file_fmttime(uint64_t v, int flags, char *buf)
 234 {
 235         char *pp;
 236         time_t t;
 237         struct tm *tm, tmz;
 238
 239         if (flags & FILE_T_WINDOWS) {
 240                 struct timespec ts;
 241                 cdf_timestamp_to_timespec(&ts, CAST(cdf_timestamp_t, v));
 242                 t = ts.tv_sec;
 243         } else {
 244                 // XXX: perhaps detect and print something if overflow
 245                 // on 32 bit time_t?
 246                 t = (time_t)v;
 247         }
 248
 249         if (flags & FILE_T_LOCAL) {
 250                 tm = localtime_r(&t, &tmz);
 251         } else {
 252                 tm = gmtime_r(&t, &tmz);
 253         }
 254         if (tm == NULL)
 255                 goto out;
 256         pp = asctime_r(tm, buf);
 257
 258         if (pp == NULL)
 259                 goto out;
 260         pp[strcspn(pp, "\n")] = '\0';
 261         return pp;
 262 out:
 263         return strcpy(buf, "*Invalid time*");
 264 }